BS EN 50490-2008 pdf download.Electrical installations for lighting and beaconing of aerodromes — Technical requirements for aeronautical ground lighting control and monitoring systems — Units for selective switching and monitoring of individual lamps.
This BS EN 50490
• applies to the units that are directly electrically connected to the primary or secondary side of an AGL series circuit and are needed to provide the selective switching and/or monitoring of lamps,
• does not cover communication protocols and application procedures,
• does not treat system aspects that influence the AGL operation.
NOTE These units may be used forming part of either a SMGCS or A-SMGCS to guide and/or control the surface
movement of aircraft by means of visual aids
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 60439-1 • Low voltage switch gear and control gear assemblies — Part 1: Type tested and partially
type-tested assemblies (IEC 60439-1)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 61000-4-5, Electromagnetic compatibility (EMC) — Part 4-5: Testing and measurement techniques – Surge Immunity test (IEC 61000-4-5)
EN 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards – Immunity for industrial environments (IEC 61000-6-2)
EN 61000-6-3, Electromagnetic compatibility (EMC) — Part 6-3: Generic standards – Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-3)
EN 61000-6-4, Electromagnetic compatibility (EMC) — Part 6-4: Generic standards – Emission standard for industrial environments (IEC 61000-6-4)
EN 61822, Electrical installations for lighting and beaconing of aerodromes – Constant current regulators (IEC 61822)
EN 61823. Electrical installations for lighting and beaconing of aerodromes – AGL series transformers (IEC 61823, mod.)
EN 62262. Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (1K-Code) (IEC 62262)
IEC/TS 61000-6-5, Electromagnetic compatibility (EMC) — Part 6-5: Generic standards – Immunity for power station and substation environments
3 Definitions
For the purposes of this standard the following definitions apply.
Where the terms voltage and current are used, they shall be rms. values unless otherwise stated,
3.1
lamp
light emitting device
3.2
routine test
test for the purpose of checking manufactured products for compliance with this standard
3.3
service voltage
the nominal voltage at which a unit is designed to operate
3.4
type test
test to confirm that the product design and production processes are capable of providing products that meet the requirements of this standard
3.5
type test sample
a sample consisting of one or more similar samples used for a type test
3.6
EUT
Equipment or Unit under Test
3.7
selective switching
switching of an individual lamp or an individual group of lamps
3.8
unit
complete physical assembly capable of performing functions
4 General requirements
4.1 Electrical connections
Where a unit is provided with leads and/or connectors for connection to the primary or secondary side of an AGL series circuit these shall comply, where applicable, with the requirements of EN 61823 stated below:
• mechanical characteristics of connectors;
• electrical characteristics of the leads and connectors;
• mechanical strength of the interface of all leads with the unit, where the unit is intended to be handled in the same way as a series circuit transformer.
4.2 Enclosure for Indoor units
Units, intended for indoor use, shall provide protection at least according to IP 20 (EN 60529).
4.3 Enclosure for outdoor units
Units, intended for outdoor use, shall provide protection at least according to P 68 (EN 60529). In case the unit is intended for connection only to the secondary and only for installation above ground, the IP-rating can be reduced to lP 54 (EN 60529). The housing material shall comply with the applicable requirements of EN 61823.
4.4 MechanIcal Impact protection
The protection degree against external mechanical impacts (code 1K EN 62262) shall be announced by the manufacturer in the product data sheet.
4.5 Earthlng
Any exposed conductive part of the housing shall be provided with an external earthing terminal to enable independent safety earth connection.
4.6 ServIce temperature and humidity
For outdoor units the ambient temperature range shall be at least — 25 °C to + 55 C. For indoor units the ambient temperature range shall be at least 0 C to + 50 C. The range for relative humidity shall be from 10 % to 95 % non-condensing. Where higher humidity rating is required or where condensing can be expected, the unit shall be designed as intended for underground use. See 4.3.
4.7 RelIability
The MTBF of the unit shall be published In the manufacturer’s technical data.BS EN 50490-2008 pdf download.